Retirement: Azure Kubernetes Service support for Ubuntu 22.04

On June 30, 2027, we'll retire Ubuntu 22.04 on Azure Kubernetes Service. To avoid disruptions, transition to Ubuntu 24.04 or later by that date. Newer supported versions include kernel updates and security improvements.

Until June 30, 2027, you can continue to use Ubuntu 22.04 on AKS without disruption. If you don't migrate by June 30, 2027, you won't be able to create new node pools, AKS won't produce new node images, and you'll no longer receive security patches for existing node pools. If you'd like to enable long-term support with Kubernetes version 1.33+, first update your node pools to Ubuntu 24.04.

On April 30, 2028 AKS will remove Ubuntu 22.04 node images and existing code, causing scaling and remediation operations to fail.

Migration Options:

• Default Operating System SKU (OSSku): If you're using 'Ubuntu,' you'll automatically migrate to Ubuntu 24.04 when you upgrade your Kubernetes version to 1.35 or later.
• Versioned OSSku: If you're using 'Ubuntu2204,' update your OSSku to 'Ubuntu' for Kubernetes 1.35 or later, or 'Ubuntu2404' for Kubernetes 1.32 or later.

Learn more:

• Get answers from community experts in Microsoft Q&A or AKS GitHub.
• For support plan and need technical help, follow the documentation
• Find out about service retirements that may impact your resources in the Azure Retirement Workbook. Retirements may not be visible in the workbook for up to two weeks after being announced.